(d) Use the information you derived in part (c) to calculate the expected profits for the market maker if she sets PA = 0.6 and PB = 0.4. Explain why these will not be equilibrium prices in a competitive market. (e) Repeat part (d) with PA = 0.8 and PB = 0.2. Explain why these will not be equilibrium prices. (f) What will the equilibrium bid and ask prices be at time t=0 (i.e. before the market maker makes any trades)? Continue to assume that a = 0.5 and 90 = 0.5